Apparatus for making artificial ice.



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Specication ci' ,letters Patent.

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.application filed april 26, 1905i. Serial No. llael.

To all whom 'it nay concern:

Be it known that citizen of the United States, .residingr at Chicago, in the county of @ook and State of Illinois, have invented, certain new and useful Vlr'nprovemcnts in Apparatus tor Making Artificial lee, of which the following is a specification, reference being had to the accompanying drawing. f

y invention relates to the manufacture el artificial ice, and has for its object to provide certain improvements in apparatus for that purpose by which pure, clear .icc may be made from raw water and at a lower cost than has heretoorebeen prac ticalole. l accomplish-this object as illustrated in the drawing and as hereinafter described.

What l regard as new fis set :forth in the claims.

lin the accompanying drawing', in` which the rigore is a vertical sectional view of a simple lformi of my improved apparatus, l indicates a an or receptacle adapted to con tain the wa er to `be frozen. Said can may be made oitgany suitable material, such' as iegalvanized iron, .and is provided with a bottom 2, which is exposed to the air.

3 indicates a jacket, which surrounds the sides ot the can, forming a brine chamber t extending from the bottom to the top or the can around the sides thereof, through which thebrine, or other freezing medium, circulates.

.'iindicates an inlet-pipe communicating with the upper portion olE the brinechainber Al for admitting brine thereto.

i 6 indicates an outlet-pipe that communi-- cates with the lower-portion of the brine` chamber e, refcrably at the opposite side of? thecan trom the inlctpipe 5. The ai rangement is such that the brine enters the chamber d at one side thereof near the top and passes out at the other side thereof. near the bottom.' f

7 indicates a collai secured the bottom 2, and 8 indicates a is iitted into the Acollar 7 centrally to sleeve which centrally, being .insulated therefrom by an insulating collar 9. Preferably th parte 7, 8 and 9 are screwed together orconveniencein assembling them and taking them apart.

lll indicates an airpipe,.which entends into the sleeve it from below and is prol, @iran ll. Jewett, a

'conductivity vided with a l nozzle ll directed upward along the center line oi? the cam so as to discharge air thereinto at the center in anl upward direction. The air-pipe l0 is best secured to the sleeve 8 by a nipple 12 screwed into the lower end of the sleeve 8,

. as shown.

13 indicates a drain-pi e, which communicates with the sleeve 8 preferably at one side thereof, as shown in the drawing, said drain-pipe being provided with a valve 14;, bytheoperation of which said drain-pipe may be opened or closed as desired.

The operation of the apparatus is as fol lows: The valve lll 4being first closed, the can 1 ,is filled with the Water to be frozen and brine, ory other freezing medium, is

caused to circulate through the chamber 4. y

At the same time air is admitted at the bottom oit the can through the pipe l0. The

ice begins to form at the sides of the can, growing toward the center thereof as freezmg progresses.l yThe forming ice, however, is kept pure by reason of the agitation of the' Water induced by the compressed air admitted to the pipe l0. This agitation of the water prevents the impurities froinadhering to the ice or becoming embedded therein, so that as freezing progresses the unfrozcn water gradually becomes more and more impure proportionately. Owing tothe of the metal composing the bottom 2 ofthe can, the ice grows along the bottom aswell asin the intermediate portions ofthe can, but this doesv not interfere with. the admission of the air as the air-pipe is insulated from the bottom,l as above de scribed. It wlll be noted that the air-pipe is outside of thc is not exposed to the action of the freezing medium, so that the moisture'contained in the air is not )frozen and the air supply is not interfered with during' the :Freezing op* eration. When frcezinghas advanced to the point shown in the drawing, so that only a small vertical passage l5 remains at the center of the mass of ice, the valve 14e is brine chamber and can, and

'isa

pure "water` has been drawn oli, the cent-ral passage may be hushed out with fresh 'y Water, but thisis desirable.

. By the use ofthe a paratus herein de scribed I am not only all; vice trom raw Water, but' am also ab e to le to produce ure v greatly economize in the cost of making the ice in another important respect; 'I have demonstrated by experiment that the cost of freezing thewater 1n the center of the block of ice is ver f much greater proportionately than that o freezing the remainder of the lice, this difference being indicated by the tact that the `irst'90%l of the ice may be frozen in 7 0% of the time required to freeze the entire mass solid. Consequently, lby stopping the freezing operation when 90% of the Water in the can is frozen I am able to save 30% of the time which would be re- A quired ifthe operation Werecontinue until vse all the Water were frozen.

My invention is not limited in ts'application to cans adapted to contain a-l single block of ice, but may be vappliedpalso to receptacles ot other forms. Furthermore, my

invention is not limited to thefspecific -fea-4 [the jacket and the can, means for admitting air through the bottom of said can, and a valved outletcommunicating With the loottom. of the can for vdischarging therefrom intuitie open air the unfrozen water remain` not. usualiy necessaryA Ior i ing therein after the massv of ice has been formed. ,y

2. An apparatus for making artificial ice, comprising a jacketed can adapted to contain the water tobe frozen, means for causing a freezin medium tocirculate between the jacket an the can, an external airpipe openn into said can through the bottom thereo vfor admitting -air thereto, and a drain-pipe communicating with the 4bottom of the 'said can for drawing oi the unfrozcn Water therefrom.

3. Anapparatusfor making artificial ice, comprising a jacketed can havin .a brinechamber surrounding the sides o said can',

an air-pipe outside of the brine chamber and can and opening into said can at the bottom thereof, and a drain-pipe communieating with the bottom of the can Jor dis-l charging the unfrozen water therefrom.

4. Anapparatus for making artificial ice, comprising a can, a sleeve fitted in the bottoni of the canand opening thereinto, an airpipe extending into said sleeve and adapted to discharge air into said can at the bottom thereof,l 'and a ldrain-pipe communicating with said sleeve.

5. An apparatus for making artificial ice, comprising a can, a sleeve fitted in the bottom of the can and opening thereinto, said sleeve being insulated therefrom, an air-pipc extending into said sleeve and adapted to discharge air into -said can at the bottoni thereof, and a drain-pipe communicating with said sleeve.

, l 0Min u. Jrnvnni.. Witnesses:

JOHN L. JACKSON, W. H. Dn BUSH. 

